Can you design a better windmill?
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Taken from group's reports:
Introduction
- what were you investigating?
a) How wind be turned into power
b) can our wind terbines can provide enough to power a ipod
c) Can our wind terbines can produce enough energy to charge an ipod for an hou
r

Prediction - will your design produce enough energy to charge an iPod for an hour in the 10 minutes you have?
a) Yes
b) No because our V was 0.0 and our mA was 0.0 because it didn't move
c) No because our V was 0.0 and our mA was 0.0 because it didn't move


Conclusion - What did you discover?
a) We couldn't couldn't create enough energy to power anything
b) The closer the fan the faster it is
c) The closer the fan the faster it is


Evaluation - How would you improve your windmill design if you were doing this experiment again?
a) We would add more objects for more wind resistance
b) More blades to make more our resistance
c) More blades on it to make more our resistance


What would you like to ask a power expert about this experiment?
a) why ours wouldn't move?!

Click comments below for answers

2 comments:

josh_u said...
This comment has been removed by the author.
josh_u said...

Why ours wouldn't move?!

It looks like this design is based on the good beach windmill design, but perhaps it is too flat so that the wind pushed the blades backwards rather than round. Try making the rotors rigid, or adding space between the front and back of the rotors by placing the cork in the middle of the windmill.

Power Engineer Expert Comment
The role of the windmill is to transfer the energy stored in the wind to the energy stored in the inertia of the rotating windmill. This is done
by the careful design of the blades, their size and pitch to minimise the "pushing back" effect and maximise the rotation.